Lamp.



W. S. HAMM.

LAMP..

APPLICATION msn 1AN.29, |916.

1 1 96,947. Patented Sept. 5, 1916.

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WILLIAM S. HAMM, OF HITBBARD WOODS, ILLINOIS, ASSIGNO'R T0 TI-IE ADAMS 8c WEST- LAKE COMPANY, A CORPORATION 0F ILLINOIS.

LAMP.

Specification of Letters Patent.

Patented Sept. 5, 1916.

To all whom t may concern:

Be it known that I, WILLIAM S. HAMM, a citizen of the United States, and resident of Hubbard IVoods, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Lamps, of which the following is a specification, and which are illustrated inthe accompanying draw ings, forming a. part thereof.

The invention relates to oil-burning lamps of the kind adapted for outdoor use, as on vehicles, and more particularly to lamps of the so-called top drafty type in which the air for supporting combustion enters near the top of the lamp casing.' In lamps of this type it is found that under the influence of severe jars the iiame may be extinguished. This trouble has been developed in using the lamp at the rear ends of auto trucks. In this service when the vehicle wheel drops from an elevation of a few inches the abrupt and severe jar has a tendency to extinguish the lamp, probably due to a reversal of vapor currents which momentarily deprives the flame of oxygen. y

The object of this invention is to safeguard the flame against such extinguishing action; and it consists broadly in the provi-` sion of means for delivering below and around the burner a supplemental air supply, with means for preventing a. too violent air current at this point during high winds, and for retarding any tendency of the air to move in a reverse direction.

The details of the invention are fully pointed out herein, and it is illustrated in the accompanying drawings, in which- Figure 1 is a vertical sectional view of the lamp; Fig. 2 is a horizontal plan section on the line 2-2 of Fig. l; Fig. 3 is a detail `of the lamp font and the air trunk for delivering to the burner the supplemental air supply; Fig. 4L is an inside View of a cap for covering the outer end of the air trunk, and a baffle for fitting within the trunk; Fig. 5 is aside elevation of the lamp, partly broken, away, showing a modified form of construction; Fig. 6 is a plan View of the lamp, partly broken away, showing the construction of Fig. 5; and Fig. 7 is a detail section 0n the line 7-7 of- Fig. 5.

rI he lamp is usually provided with a metal cylindrical casing 10, having a. lateral lens 1l and provided with an exhaust opening l2 and a central conical chimney iiue 13. The dome 14 of the lamp is provided with a series of air induction ports l5, and a foraminous screen 16 is interposed between these ports andthe combustion chamber. The font is shown at 17 and itsburner at 18.

So far as thus described the lamp is of known construction. -The air enters at the ports 15 and passes down into the combustion chamber, sweeping the walls thereof and feeding the flame at theburner. The products of combustion rise from the burner and pass out through the flue 13 and opening 12.

The improvement in the lamp consists in an air trunk 19, entering through a side wall ofthe lamp casing and inclosiug the burner 1'8, and being provided in its upper wall with an opening 20 which surrounds the burner. For convenience in manufacture the trunk 1s made in two portions, its main body portion being attached to the'casing wall and being open at its inner end partially inclosing the burner. The other section, 21, of the trunk is in the form of an open-sided boX attached tothe fontand telescopically engaging the main section of the trunk, as shown in Fig. 2, when the font is slid into place in the casing, through ya suitably closed opening in the wall thereof.

The outer open end of the trunk 19 is guarded by means of a cap 22, which covers the same, and is attached to the outer face of the lamp casing. This cap is provided at each side with induction ports 23, as numerous as may be found desirable. In order to prevent the air from blowing entirely through the cap from side to side, and

thus setting up a suction within the air trunk, a vertical partition 24 is placed within the cap and crosses the mouth of the trunk.

To check any tendency of the air to flow outwardly through the trunk 19, a balile is inserted within the latter and preferably takes the form of a cone rustum'. For the purpose of retarding the velocity of the entering air currents the outer end of the trunk is preferably contracted, and, in the preferred form of Construction, this is accomplished by applying to the outer end of the trunk a guard 26 in the form of a cone ifrustum. This contraction of the outer end of the trunk, While preferable, is not essential, and in the modification shown in Figs. 5, 6 and 7 it is provided with a flaring mouth 27, and the inclosing cap 2S is shown as circular in form, its ports 29 being in the upper portion thereof and being guarded by an outer shield 30.

While 1. have shown the preferred form of construction and one modification thereof, other changes may be made Without departing from its scope, and l therefore do not desire to be limited to the details as shown.

li claim as my inventionl. In a lamp, in combination, a casing having at its upper end lateral ports entering its flame chamber for normally supplying air to support combustion, an oil font Within the casing, a burner mounted on the font, and an air trunk entering laterally through the side Wall of the body and inclosing the Wick tube of the burner and having an opening in its upper Wall through which the burner projects and a supplemental supply of air is delivered thereto.

2. ln a lamp, in combination, a closed casing having lateral air induction ports and an exhaust opening at its upper end, a font Within the casing and having a burner, an air trunk entering through the side Wall of the casing and inclosing the burner and having a discharge opening adjacent thereto, and a baffle Within the trunk for retarding outflow therethrough.

3. In a lamp, in combination, a closed casing having lateral air induction ports and an exhaust opening at its upper end, a font Within the casing and having a burner, an air trunk entering through the side Wall of the casing and inclosing the burner and having a discharge opening adjacent thereto, and a cap covering the outer end oi' the trunk and having lateral perforations.

l. ln a lamp, in combination, a closed casing having lateral air induction ports and an exhaust opening at its upper end, a i'ont Within the casing and having a burner, an air trunk entering through the side Wall of the casing and inclosing the burner and having a discharge opening adjacent thereto,

' a cap covering the outer end of the trunk and having lateral perforations, and a verticall partition in the cap crossing the open end of the trunk.`

5. ln a lamp, in combination, a closed casing having lateral air induction ports and an exhaust opening at its upper end, a font Within the casing and having a burner, an air trunk entering through the side Wall of the casing and inclosing the burner and having a discharge opening adjacent thereto, and a baffle Within the trunk in the form oi' a frustum having its smaller end directed inwardly.

6. in a lamp, in combination, a casing having at its upper end lateral ports entering its arne chamber for normally supplying air to support combustion, an oil font Within the casing, a burner mounted on the font, and an air trunk entering laterally through the side wall of the body and inclosing the Wick tube of the burner and having an opening .in its upper Wall through which the burner projects and a supplemental supply of air is delivered thereto, the outer end of the trunk being contracted and projecting beyond the Wall of the casing.

7. In a lamp, in combination, a closed casing having lateral air induction ports and an exhaust opening at its upper end, a font Within the casing and having a burner, an air trunk entering through the side Wall of the casing and inclosing the burner and having a discharge opening adjacent thereto, the outer end of the trunk being contracted, a baiile Within the trunk in the form of a rustum having its smaller end directed inwardly, a cap inclosing the outer end of the trunk and having lateral perforations, and a vertical partition in the cap crossing the open end of the trunk.

8. ln a lamp, in combination, a closed casing having lateral induction ports at its upper end for normally supplying air to support combustion, a font Within the casing and having a burner, an air trunk entering laterally through the casing Wall and inclosing the burner and having an upwardly-directed opening surrounding the burner.

9. ln a lamp, a casing having a side door, a font slidable into service position through such door, an air trunk entering laterally through the casing Wall and leading to the burner, the inner end of the trunk being carried by the font and telescopically engaging the main section of the trunk, such trunk having an opening through which the burner projects.

10. In a lamp, a casing having a side door, a font slidable into service position through such door, an air trunk entering laterally through the casing Wall and leading to the burner, and a member carried by the font and adapted to form the inner end of the trunk When the font is in service position, such trunk having an opening through which the burner projects.

l1. ln a lamp, in combination, a casing having at its upper end lateral ports entering its iiame chamber for normally supplying air to support combustion, an oil font air to support combustion, an oil font Within Within the Casing, a burner mounted on the(s the casing, a burner mounted on the font, an font, and aILair trunk projecting beyond the air trunk projecting beyond the Wall of the 10 Wall of the casing and being tapered. y easing and being tapered, and a cap Covering 12. In a lamp, in Combination, a casing the outer end of the trunk and having lateral having at its upper end lateral ports entering openings.

its flame chamber for normally supplying WILLIAM S. HAMM.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

